Average
#1222 of 2,466 schools in NJ
Top 50% in state
Millstone River School
Elementary School · West Windsor-Plainsboro Regional School District
75 GROVERS MILL ROAD, Plainsboro, NJ 08536
Enrollment
813
Student-Teacher
10.3:1
Score
6.5
Grades
3rd – 5th
Enrollment
813
Student-Teacher
10.3:1
Score
6.5
Grades
3rd – 5th
Data vintage
2022-23
Data vintage2022-23
How this school compares
New Jersey schools
#1,222 of 2,466
In Plainsboro
#4 of 5
public schools
In district
#9 of 10
West Windsor-Plainsboro Regional School District
Equity
7.9 / 10
Very Good
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Millstone River School
Elementary School in Plainsboro · grades 3rd – 5th. Start here, then compare fit against nearby and district options.
Community Middle School
0.2 mi away. Use as a geographic alternative in the same move search.
West Windsor-plainsboro High School North
0.3 mi away. Use as a geographic alternative in the same move search.
About Millstone River School
Millstone River School is a public elementary school in Plainsboro, NJ, part of West Windsor-Plainsboro Regional School District. Millstone River School serves approximately 813 students, and covers grades 3rd-5th, and has a 10.3:1 student-teacher ratio. Millstone River School has a current MySchoolScout rating of 6.5 out of 10 and ranks #1,222 of 2,466 schools in NJ.
Structured state assessment records for Millstone River School show 74% math proficiency (multi-year average, 2009-2025) and 72% reading/ELA proficiency (multi-year average, 2009-2025).
- This school 6.5 · Average
- District avg 7.4
- NJ avg 6.5
What Parents Should Know
Millstone River School sits in a rural area, which can mean longer drives for some families. Rural schools are often community anchors with smaller classes, but check transportation, after-school options, and access to specialized services before you commit.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Millstone River School — Students at Millstone River School score 64% proficient, which is above what's typical for similar communities (expected: 63%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
8.9%
Students qualifying for federal meal assistance
Test Scores NJ NJSLA (2024-25)
Based on 41 test records from NJ state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 5.4/10.
How Millstone River School Compares
See how Millstone River School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
75 GROVERS MILL ROAD, Plainsboro, NJ 08536
Nearby Alternatives
Families considering Millstone River School may also want to explore other elementary schools in the area. Maurice Hawk Elementary School (rated 8.7/10, 2.1 miles away, in nearby West Windsor), which scores notably higher. Another option is J.V.B. Wicoff Elementary School (rated 8.5/10, 0.6 miles away), which scores notably higher. Additionally, YINGHUA INTERNATIONAL SCHOOL (rated 8.1/10, 3.8 miles away, in nearby Kingston), which scores notably higher. For more schools in Plainsboro, see our Plainsboro schools guide .
Nearby Schools
20 within 3.8 miNeighborhood Census ACS (2019-2023)
Census data for ZIP 08536 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$128,426
Median Home Value
$655,100
Median Rent
$1,908/mo
Population
20,558
College Educated
79.2%
Homeownership
44.1%
Avg Commute
33.2 min
Poverty Rate
2.3%
Median Age
36.7
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Anna C. Scott Elementary School Leonia, NJ | 6.5 |
| Bayville Elementary School Bayville, NJ | 6.5 |
| Berlin Community School Berlin, NJ | 6.5 |
| Chesterfield Township Elementary School Chesterfield, NJ | 6.5 |
| George Washington Academy School No. 1 Elizabeth, NJ | 6.5 |
| Hawkins Street School Newark, NJ | 6.5 |
Frequently Asked Questions
Common questions about Millstone River School
What grades does Millstone River School serve?
Millstone River School serves students in grades 3rd through 5th.
How many students attend Millstone River School?
Millstone River School has an enrollment of approximately 813 students.
What is the student-teacher ratio at Millstone River School?
The student-teacher ratio at Millstone River School is 10.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Millstone River School rank in NJ?
Millstone River School ranks #1,222 of 2,466 schools in NJ.
What is Millstone River School's MySchoolScout rating?
Millstone River School has a current MySchoolScout rating of 6.5 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Millstone River School?
Based on loaded state assessment records, Millstone River School has 74% math proficiency (multi-year average, 2009-2025) and 72% reading/ELA proficiency (multi-year average, 2009-2025).
Is Millstone River School a charter school?
No, Millstone River School is not a charter school. It is a traditional public school operated by the local school district.
Is Millstone River School a Title I school?
No, Millstone River School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Millstone River School?
8.9% of students at Millstone River School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 3rd – 5th
- Enrollment
- 813
- Student-Teacher Ratio
- 10.3:1
- Teachers (FTE)
- 79
- Free/Reduced Lunch
- 8.9%
- Type
- regular
- Setting
- Fringe Rural
- County
- Middlesex County
- Chronic Absenteeism (SY 2022-23)
- 11.1%
- Phone
- (609) 716-5500
Resources & Links
District
West Windsor-Plainsboro Regional School District- District Enrollment
- 9,015
- Schools in District
- 10
- Per-Pupil Spending
- $24,392
- District Rank
- #9 of 10
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